sears



SEARS & EDSON.

Window Ventilator.

Patented Aug. 31, 1869.

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W. TsSEAR S AND WILLIAM EDSON, OF BOSTON, MASSACHUSETTS,

ASSIGNORS TO W. T. SEARS. A

Letters Patent No. 94,245, dated August 31, 1869.

VENTILATOR.

The Schedule referred to in these Letters Patent and making part of the same.

To all whom it may concern:

Be it known that we, W. '1. Saints and WILLIAM Enson, of Boston, in the county of Suffolk, and State of Massachusetts, have invented a certain newand useful improved \Vindow-Ventilator; and we do hereby declare that the following is a full'and exact descrip tion thereof, reference being had to the accompanying drawings, and to the letters of reference marked thereon. I c

The nature of our invention consists in so arranging a casing, in connection with the-lower partof a window, and a heat-radiating apparatus, that when the window is raised within certain limits the fresh air thus admitted is forced into contact with the heatin g-surface, and thus warmed before it can enter into theroom. p

To enable others'skilled in the art to make and use our invention, we will proceed to describe its construct-ion and use.

Drawings.

Figure-1 is a perspective view of the interior of a room, showing a window with our improvement attached.

Figure 2 is a section of the same' Figure 3 represents, in dotted lines, a modification of our invention. a

and, coming in contact with the radiators D D D 850., will he warmed, after which it will pass into the room.

' H, fig. 2, represents a wire-cloth'screen.

The amount of air to be admitted is regulated by the sash S, which may he raised orlowered at will.

What we claim as our invention, and desire to secure by Letters Patent of the United States, is-

The air-box A B, in combination with the window.

" W and the heating-surface D D D", substantially as described, and for the purpose set forth.

. \V. 'l. SEAR-S.

WILLIAM EDSQN.

\Vitnesses FRANK G. PARKER, JAs. S. 001mm. 

